Year	current US$
1970	63851193.0228573
1971	75343709.8909926
1972	100020680.659191
1973	148800284.629981
1974	164156701.030928
1975	192872980.362913
1976	207179104.477612
1977	265153846.153846
1978	322127823.161941
1979	366853874.538746
1980	397184243.022969
1981	373803564.196031
1982	391950228.542408
1983	404139658.220389
1984	408032826.982492
1985	419040862.792091
1986	481402518.891688
1987	507106891.981417
1988	528486334.022849
1989	529868848.501633
1990	617884090.909093
1991	701010434.78261
1992	797580732.700134
1993	752684068.944902
1994	855167457.493081
1995	1013244052.02496
1996	1057328333.67578
1997	1190912379.05778
1998	1338925731.13375
1999	1254397356.58986
2000	1139436419.34778
2001	1182276952.0514
2002	1183547879.29943
2003	1572579650.75669
2004	1776629915.6965
2005	1818247094.18838
2006	1967761081.89331
2007	2211324102.54409
2008	2537570327.08384
2009	2496510967.93305
2010	2586552687.13148
2011	2702591825.68547
2012	2678995030.66778
2013	2750733057.91838
2014	2865479120.28038
2015	2631395187.60196
2016	2560847206.70391
2017	2429117839.13367
2018	2457334731.19498
2019	2408015914.66739
2020	2427326376.04893
2021	2663696616.89032